Grimes, AL has a population of 663 and is the 17,795th largest city in the United States. The population density is 530 per sq mi which is 476% higher than the Alabama average and 485% higher than the national average. The median age in Grimes is 37 which is approximately 4% lower than the Alabama average of 39. In Grimes, 55% of the population over 15 years of age are married, 83% speak English and 16% speak Spanish. 63% of Grimes residents were born in Alabama, 27% were born out of state, 5% were born outside of the United States and 6% were foreign born.